// RunDetached runs a command in the background (e.g. non-blocking).
func (a *App) RunDetached(process, command, releaseID string) error {
resources, err := a.Resources()
if err != nil {
return err
}
taskDefinitionArn := resources[UpperName(process)+"ECSTaskDefinition"].Id
if releaseID == "" {
releaseID = a.Release
}
release, err := GetRelease(a.Name, releaseID)
if err != nil {
return err
}
// If the releaseID specified isn't the app's current release:
// - We have to find the right task definition OR
// - create a new/temp task definition to run a release that hasn't been promoted.
if releaseID != a.Release {
task, err := ECS().DescribeTaskDefinition(&ecs.DescribeTaskDefinitionInput{
TaskDefinition: aws.String(taskDefinitionArn),
})
if err != nil {
return err
}
td, _, err := findAppDefinitions(process, releaseID, *task.TaskDefinition.Family, 20)
if err != nil {
return err
} else if td != nil {
taskDefinitionArn = *td.TaskDefinitionArn
} else {
// If reached, the release exist but doesn't have a task definition (isn't promoted).
// Create a task definition to run that release.
var cd *ecs.ContainerDefinition
for _, cd = range task.TaskDefinition.ContainerDefinitions {
if *cd.Name == process {
break
}
cd = nil
}
if cd == nil {
return fmt.Errorf("unable to find container for process %s and release %s", process, releaseID)
}
env := structs.Environment{}
env.LoadRaw(release.Env)
for _, containerKV := range cd.Environment {
for key, value := range env {
if *containerKV.Name == "RELEASE" {
*containerKV.Value = releaseID
break
}
if *containerKV.Name == key {
*containerKV.Value = value
break
}
}
}
taskInput := &ecs.RegisterTaskDefinitionInput{
ContainerDefinitions: []*ecs.ContainerDefinition{
cd,
},
Family: task.TaskDefinition.Family,
Volumes: []*ecs.Volume{},
}
resp, err := ECS().RegisterTaskDefinition(taskInput)
if err != nil {
return err
}
taskDefinitionArn = *resp.TaskDefinition.TaskDefinitionArn
}
}
req := &ecs.RunTaskInput{
Cluster: aws.String(os.Getenv("CLUSTER")),
Count: aws.Int64(1),
StartedBy: aws.String("convox"),
TaskDefinition: aws.String(taskDefinitionArn),
}
if command != "" {
req.Overrides = &ecs.TaskOverride{
ContainerOverrides: []*ecs.ContainerOverride{
&ecs.ContainerOverride{
Name: aws.String(process),
Command: []*string{
aws.String("sh"),
aws.String("-c"),
aws.String(command),
},
},
},
}
}
_, err = ECS().RunTask(req)
return err
}
// RunAttached runs a command in the foreground (e.g blocking) and writing the output from said command to rw.
func (a *App) RunAttached(process, command, releaseID string, height, width int, rw io.ReadWriter) error {
//TODO: A lot of logic in here should be moved to the provider interface.
resources, err := a.Resources()
if err != nil {
return err
}
if releaseID == "" {
releaseID = a.Release
}
release, err := GetRelease(a.Name, releaseID)
if err != nil {
return err
}
var container *ecs.ContainerDefinition
unpromotedRelease := false
task, err := ECS().DescribeTaskDefinition(&ecs.DescribeTaskDefinitionInput{
TaskDefinition: aws.String(resources[UpperName(process)+"ECSTaskDefinition"].Id),
})
if err != nil {
return err
}
for _, container = range task.TaskDefinition.ContainerDefinitions {
if *container.Name == process {
break
}
}
// This would force an app to be promoted once before being able to run a process.
if container == nil {
return fmt.Errorf("unable to find container for %s", process)
}
// If the release ID provided does not equal the active one, some logic is needed to determine the next steps.
// - For a previous release, we iterate over the previous TaskDefinition revisions (starting with the latest) looking for the releaseID specified.
// - If the release has yet to be promoted, we use the most recent TaskDefinition with the provided release's environment.
if releaseID != a.Release {
_, releaseContainer, err := findAppDefinitions(process, releaseID, *task.TaskDefinition.Family, 20)
if err != nil {
return err
}
// If container is nil, the release most likely hasn't been promoted and thus no TaskDefinition for it.
if releaseContainer != nil {
container = releaseContainer
} else {
fmt.Printf("Unable to find container for %s. Basing container off of most recent release: %s.\n", process, a.Release)
unpromotedRelease = true
}
}
var rawEnvs []string
for _, env := range container.Environment {
rawEnvs = append(rawEnvs, fmt.Sprintf("%s=%s", *env.Name, *env.Value))
}
containerEnvs := structs.Environment{}
containerEnvs.LoadRaw(strings.Join(rawEnvs, "\n"))
// Update any environment variables that might be part of the unpromoted release.
if unpromotedRelease {
releaseEnv := structs.Environment{}
releaseEnv.LoadRaw(release.Env)
for key, value := range releaseEnv {
containerEnvs[key] = value
}
containerEnvs["RELEASE"] = release.Id
}
m, err := manifest.Load([]byte(release.Manifest))
if err != nil {
return err
}
me, ok := m.Services[process]
if !ok {
return fmt.Errorf("no such process: %s", process)
}
binds := []string{}
host := ""
pss, err := ListProcesses(a.Name)
if err != nil {
return err
}
for _, ps := range pss {
if ps.Name == process {
binds = ps.binds
host = fmt.Sprintf("http://%s:2376", ps.Host)
break
}
}
var image, repository, tag, username, password, serverAddress string
if registryId := a.Outputs["RegistryId"]; registryId != "" {
image = fmt.Sprintf("%s.dkr.ecr.%s.amazonaws.com/%s:%s.%s", registryId, os.Getenv("AWS_REGION"), a.Outputs["RegistryRepository"], me.Name, release.Build)
repository = fmt.Sprintf("%s.dkr.ecr.%s.amazonaws.com/%s", registryId, os.Getenv("AWS_REGION"), a.Outputs["RegistryRepository"])
tag = fmt.Sprintf("%s.%s", me.Name, release.Build)
resp, err := ECR().GetAuthorizationToken(&ecr.GetAuthorizationTokenInput{
RegistryIds: []*string{aws.String(a.Outputs["RegistryId"])},
})
if err != nil {
return err
}
if len(resp.AuthorizationData) < 1 {
return fmt.Errorf("no authorization data")
}
endpoint := *resp.AuthorizationData[0].ProxyEndpoint
serverAddress = endpoint[8:]
data, err := base64.StdEncoding.DecodeString(*resp.AuthorizationData[0].AuthorizationToken)
if err != nil {
return err
}
parts := strings.SplitN(string(data), ":", 2)
username = parts[0]
password = parts[1]
} else {
image = fmt.Sprintf("%s/%s-%s:%s", os.Getenv("REGISTRY_HOST"), a.Name, me.Name, release.Build)
repository = fmt.Sprintf("%s/%s-%s", os.Getenv("REGISTRY_HOST"), a.Name, me.Name)
tag = release.Build
serverAddress = os.Getenv("REGISTRY_HOST")
username = "******"
password = os.Getenv("PASSWORD")
}
d, err := Docker(host)
if err != nil {
return err
}
err = d.PullImage(docker.PullImageOptions{
Repository: repository,
Tag: tag,
}, docker.AuthConfiguration{
ServerAddress: serverAddress,
Username: username,
Password: password,
})
if err != nil {
return err
}
res, err := d.CreateContainer(docker.CreateContainerOptions{
Config: &docker.Config{
AttachStdin: true,
AttachStdout: true,
AttachStderr: true,
Env: containerEnvs.List(),
OpenStdin: true,
Tty: true,
Cmd: []string{"sh", "-c", command},
Image: image,
Labels: map[string]string{
"com.convox.rack.type": "oneoff",
"com.convox.rack.app": a.Name,
"com.convox.rack.process": process,
"com.convox.rack.release": release.Id,
},
},
HostConfig: &docker.HostConfig{
Binds: binds,
},
})
if err != nil {
return err
}
ir, iw := io.Pipe()
or, ow := io.Pipe()
go d.AttachToContainer(docker.AttachToContainerOptions{
Container: res.ID,
InputStream: ir,
OutputStream: ow,
ErrorStream: ow,
Stream: true,
Stdin: true,
Stdout: true,
Stderr: true,
RawTerminal: true,
})
go io.Copy(iw, rw)
go io.Copy(rw, or)
// hacky
time.Sleep(100 * time.Millisecond)
err = d.StartContainer(res.ID, nil)
if err != nil {
return err
}
err = d.ResizeContainerTTY(res.ID, height, width)
if err != nil {
// In some cases, a container might finish and exit by the time ResizeContainerTTY is called.
// Resizing the TTY shouldn't cause the call to error out for cases like that.
fmt.Printf("fn=RunAttached level=warning msg=\"unable to resize container: %s\"", err)
}
code, err := d.WaitContainer(res.ID)
if err != nil {
return err
}
_, err = rw.Write([]byte(fmt.Sprintf("%s%d\n", StatusCodePrefix, code)))
return err
}